Summarized Condensed Consolidating and Combining Information - Condensed Consolidating and Combining Statements of Cash Flows (Detail) - USD ($) $ in Thousands		12 Months Ended
	Aug. 18, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net cash (used in) provided by operating activities		$ 40,254	$ 21,906	$ 26,632
Cash flows from investing activities:
Acquisition of real estate		(232,466)	(25,742)	(35,656)
Improvements to real estate		(187)	(579)	0
Purchases of equipment, furniture and fixtures		(276)	(19,275)	(19,931)
Preferred equity investment		0	(7,500)	0
Escrow deposits for acquisition of real estate		(1,750)	(500)	0
Net proceeds from the sale of vacant land		30	0	0
Distribution from subsidiary		0	0
Intercompany financing		0	0
Cash proceeds from sale of equipment, furniture and fixtures		0	0	854
Net cash used in investing activities		(234,649)	(53,596)	(54,733)
Cash flows from financing activities:
Proceeds from the issuance of common stock, net	$ 163,700	162,963	0	0
Proceeds from the issuance of senior unsecured notes payable		0	260,000	0
Borrowings under unsecured revolving credit facility		45,000	0	0
Borrowings under senior secured revolving credit facility		35,000	10,000	58,700
Proceeds from the issuance of mortgage notes payable		0	50,676	0
Repayments of borrowings under senior secured revolving credit facility		(35,000)	(88,701)	0
Payments on the mortgage notes payable		(3,183)	(68,155)	(3,457)
Net-settle adjustment on restricted stock		(145)	0	0
Payments on senior secured term loan		0	(65,624)	(3,750)
Payments of deferred financing costs		(2,303)	(13,436)	(730)
Net contribution from Ensign			4,356	(22,502)
Dividends paid on common stock		(21,790)	(33,001)	0
Distribution to Parent		0	0
Intercompany financing		0	0
Net cash provided by financing activities		180,542	56,115	28,261
Net (decrease) increase in cash and cash equivalents		(13,853)	24,425	160
Cash and cash equivalents, beginning of period		25,320	895	735
Cash and cash equivalents, end of period		11,467	25,320	895
Reportable Legal Entities [Member] | Parent Guarantor [Member]
Cash flows from operating activities:
Net cash (used in) provided by operating activities		(15)	0
Cash flows from investing activities:
Acquisition of real estate		0	0
Improvements to real estate		0	0
Purchases of equipment, furniture and fixtures		0	0
Preferred equity investment			0
Escrow deposits for acquisition of real estate		0	0
Net proceeds from the sale of vacant land		0
Distribution from subsidiary		21,790	33,001
Intercompany financing		(162,803)	0
Net cash used in investing activities		(141,013)	33,001
Cash flows from financing activities:
Proceeds from the issuance of common stock, net		162,963
Proceeds from the issuance of senior unsecured notes payable			0
Borrowings under unsecured revolving credit facility		0
Borrowings under senior secured revolving credit facility		0	0
Proceeds from the issuance of mortgage notes payable			0
Repayments of borrowings under senior secured revolving credit facility		0	0
Payments on the mortgage notes payable		0	0
Net-settle adjustment on restricted stock		(145)
Payments on senior secured term loan			0
Payments of deferred financing costs		0	0
Net contribution from Ensign			0
Dividends paid on common stock		(21,790)	(33,001)
Distribution to Parent		0	0
Intercompany financing		0	0
Net cash provided by financing activities		141,028	(33,001)
Net (decrease) increase in cash and cash equivalents		0	0
Cash and cash equivalents, beginning of period		0	0
Cash and cash equivalents, end of period		0	0	0
Reportable Legal Entities [Member] | Issuers [Member]
Cash flows from operating activities:
Net cash (used in) provided by operating activities		(9,894)	(21,185)
Cash flows from investing activities:
Acquisition of real estate		(232,466)	(25,742)
Improvements to real estate		(19)	0
Purchases of equipment, furniture and fixtures		(195)	(95)
Preferred equity investment			0
Escrow deposits for acquisition of real estate		(1,750)	(500)
Net proceeds from the sale of vacant land		0
Distribution from subsidiary		0	0
Intercompany financing		46,761	(141,231)
Net cash used in investing activities		(187,669)	(167,568)
Cash flows from financing activities:
Proceeds from the issuance of common stock, net		0
Proceeds from the issuance of senior unsecured notes payable			260,000
Borrowings under unsecured revolving credit facility		45,000
Borrowings under senior secured revolving credit facility		35,000	0
Proceeds from the issuance of mortgage notes payable			0
Repayments of borrowings under senior secured revolving credit facility		(35,000)	0
Payments on the mortgage notes payable		0	0
Net-settle adjustment on restricted stock		0
Payments on senior secured term loan			0
Payments of deferred financing costs		(2,303)	(12,926)
Net contribution from Ensign			0
Dividends paid on common stock		0	0
Distribution to Parent		(21,790)	(33,001)
Intercompany financing		162,803	0
Net cash provided by financing activities		183,710	214,073
Net (decrease) increase in cash and cash equivalents		(13,853)	25,320
Cash and cash equivalents, beginning of period		25,320	0
Cash and cash equivalents, end of period		11,467	25,320	0
Reportable Legal Entities [Member] | Combined Subsidiary Guarantors [Member]
Cash flows from operating activities:
Net cash (used in) provided by operating activities		44,675	38,955	24,793
Cash flows from investing activities:
Acquisition of real estate		0	0	(35,656)
Improvements to real estate		(168)	(579)
Purchases of equipment, furniture and fixtures		(81)	(14,819)	(15,728)
Preferred equity investment			(7,500)
Escrow deposits for acquisition of real estate		0	0
Net proceeds from the sale of vacant land		30
Distribution from subsidiary		0	0
Intercompany financing		0	0
Cash proceeds from sale of equipment, furniture and fixtures				854
Net cash used in investing activities		(219)	(22,898)	(50,530)
Cash flows from financing activities:
Proceeds from the issuance of common stock, net		0
Proceeds from the issuance of senior unsecured notes payable			0
Borrowings under unsecured revolving credit facility		0
Borrowings under senior secured revolving credit facility		0	10,000	58,700
Proceeds from the issuance of mortgage notes payable			0
Repayments of borrowings under senior secured revolving credit facility		0	(88,701)
Payments on the mortgage notes payable		(558)	(66,905)	(2,249)
Net-settle adjustment on restricted stock		0
Payments on senior secured term loan			(65,624)	(3,750)
Payments of deferred financing costs		0	0	(730)
Net contribution from Ensign			52,385	(26,074)
Dividends paid on common stock		0	0
Distribution to Parent		0	0
Intercompany financing		(43,898)	141,893
Net cash provided by financing activities		(44,456)	(16,952)	25,897
Net (decrease) increase in cash and cash equivalents		0	(895)	160
Cash and cash equivalents, beginning of period		0	895	735
Cash and cash equivalents, end of period		0	0	895
Reportable Legal Entities [Member] | Combined Non-Guarantor Subsidiaries [Member]
Cash flows from operating activities:
Net cash (used in) provided by operating activities		5,488	4,136	1,839
Cash flows from investing activities:
Acquisition of real estate		0	0	0
Improvements to real estate		0	0
Purchases of equipment, furniture and fixtures		0	(4,361)	(4,203)
Preferred equity investment			0
Escrow deposits for acquisition of real estate		0	0
Net proceeds from the sale of vacant land		0
Distribution from subsidiary		0	0
Intercompany financing		0	0
Cash proceeds from sale of equipment, furniture and fixtures				0
Net cash used in investing activities		0	(4,361)	(4,203)
Cash flows from financing activities:
Proceeds from the issuance of common stock, net		0
Proceeds from the issuance of senior unsecured notes payable			0
Borrowings under unsecured revolving credit facility		0
Borrowings under senior secured revolving credit facility		0	0	0
Proceeds from the issuance of mortgage notes payable			50,676
Repayments of borrowings under senior secured revolving credit facility		0	0
Payments on the mortgage notes payable		(2,625)	(1,250)	(1,208)
Net-settle adjustment on restricted stock		0
Payments on senior secured term loan			0	0
Payments of deferred financing costs		0	(510)	0
Net contribution from Ensign			(48,029)	3,572
Dividends paid on common stock		0	0
Distribution to Parent		0	0
Intercompany financing		(2,863)	(662)
Net cash provided by financing activities		(5,488)	225	2,364
Net (decrease) increase in cash and cash equivalents		0	0	0
Cash and cash equivalents, beginning of period		0	0	0
Cash and cash equivalents, end of period		0	0	0
Elimination [Member]
Cash flows from operating activities:
Net cash (used in) provided by operating activities		0	0
Cash flows from investing activities:
Acquisition of real estate		0	0
Improvements to real estate		0	0
Purchases of equipment, furniture and fixtures		0	0
Preferred equity investment			0
Escrow deposits for acquisition of real estate		0	0
Net proceeds from the sale of vacant land		0
Distribution from subsidiary		(21,790)	(33,001)
Intercompany financing		116,042	141,231
Net cash used in investing activities		94,252	108,230
Cash flows from financing activities:
Proceeds from the issuance of common stock, net		0
Proceeds from the issuance of senior unsecured notes payable			0
Borrowings under unsecured revolving credit facility		0
Borrowings under senior secured revolving credit facility		0	0
Proceeds from the issuance of mortgage notes payable			0
Repayments of borrowings under senior secured revolving credit facility		0	0
Payments on the mortgage notes payable		0	0
Net-settle adjustment on restricted stock		0
Payments on senior secured term loan			0
Payments of deferred financing costs		0	0
Net contribution from Ensign			0
Dividends paid on common stock		0	0
Distribution to Parent		21,790	33,001
Intercompany financing		(116,042)	(141,231)
Net cash provided by financing activities		(94,252)	(108,230)
Net (decrease) increase in cash and cash equivalents		0	0
Cash and cash equivalents, beginning of period		0	0
Cash and cash equivalents, end of period		$ 0	$ 0	$ 0